Bridget, Tricky Spinner

Around the World – When you cast a noncreature artifact, you may pay {2}, if you do return another artifact you control to your hand. If you do, draw a card.
Walk the Dog – Tap an artifact: Bridget gets +1/+0 until end of turn.
Rock the Baby – At the start of the end phase, if an artifact entered and another left your battlefield this turn, scry 1 and deal 1 damage to each opponent.